# Relationship history for MSHA mine 0103353

Current hierarchy: **Berkshire Hathaway Inc → Acme Brick Tile & Stone, Inc. → Jordan Plant**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Jenkins Brick Company → Jordan Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jenkins Brick Company → Jordan Plant; 2006-08-09 to 2011-05-14; source msha-controller-operator-history
- **controller_controls_operator:** Jenkins Brick Company → Jenkins Brick Company; 2006-08-09 to 2011-05-14; source msha-controller-operator-history
- **operator_operates_mine:** Acme Brick Tile & Stone, Inc. → Jordan Plant; 2011-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Berkshire Hathaway Inc → Jordan Plant; 2011-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Berkshire Hathaway Inc → Acme Brick Tile & Stone, Inc.; 2011-05-15 to current/open; source msha-controller-operator-history